United States. President and Council of Economic Advisers (U.S.). "World Trade: Exports and Imports," in United States. President and Council of Economic Advisers (U.S.). "1978," Economic Report of the President (1978) : 382-382. https://fraser.stlouisfed.org/title/45/item/8149/toc/116508 , accessed on May 4, 2024.